Human form:

A young curvaceous noblewoman. Though light of skin and fair of hair, she wore a veil on her face, and clothes and jewelry found in Calimshan or similar cultures. The pointed ears and red eyes hinted at some non-human heritage...

Actual form:

The upper half was human, similar to the disguise, except fatter. A heavy waist with fleshy love handles, accentuated by a hefty belly. The lower half was that of a great green-scaled serpent, long and thick.